i wonder if there's a way to simulate
writing-mode: tb-rl;filter: flipv fliph; (that would make text go from bottom to top like -90deg)
making vertical text
Google is your friend. USE IT!
mozilla correctly ignores is at it isn't part of the current w3.orgs css standard (http://www.w3.org/TR/CSS2/)
it isn't adviceble to use proprietary style in your css. stick to the standars.
"filter" is an MS proprietary attribute. It is not W3C CSS compliant.
Perhaps someone has worked out a hack to get the same results. Sorry I can't be of avail.